Manufacture of cement.



l K No. 687,524. Patented Nov. 26, 190|. f c. FELLNEB.

MANUFACTURE UF CEMENT.

(Application led Apr. 15, 1901.)

(No Model.)

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UNITED STATES PATENT OFFICE.

CHRISTIAN FELLNER, OF FRANKFORT-ON-THE-MAIN, GERMANY.

MANUFACTURE oF CEMENT.

SPECIFIGATIGN forming part of Letters Patent No. 687,524, dated November26, 1901.

` Application tiled April 15,1901, Serial No. 55,903. (No specimens.)

To all whom, t may concern:

Be it known that I, CHRISTIAN FELLNER, manufacturer,ofFrankfort-on-the-Main,Germany,have invented new and useful Improvementsin the Manufacture of Ce1nent,of which the following is a specification.

The present improvements relate to the manufacture of cement,Portlandcement, and other cements, and more particularly to that kind ofmanufacture wherein the constituents of the cement are rst in moltencondition-as, for instance, in the manufacture of cement out of theslags of blast-furnaces.

The invention consists in the particular means hereinafter described andclaimed for treating the molten material and converting it intomarketable cement. It is necessary for this purpose to divide the moltenmaterial in fine particles as much as possible and bring the sameintocontact with suficientair to cause the complete combustion of alldeleterious elements, as sulfur, dac., if there are any. For thispurpose a rotating cone or plate or equivalent device is provided, tothe top of which the molten material is fed. On striking the surface ofthe quickly-rotating body the material is dispersed by centrifugal forceand iinely divided.

In order that the present invention may be fully understood,a drawing isannexed, showing the preferred form of the new apparatus.

d is a gutter conducting the molten material from the melting-place anddropping it.

to the center of the rotating stepped cone b. This cone b, of iron orother suitable material, is hollovT and supported by a hollow axle c,which is held in the bearings n and rorated by any known means-as, forinstance, the shaft p and conical gears q. The foot end of the axle c isintroduced into a stuffing-box r, which connects it with the airconduitd. The cone ZJ has a number of small perforations or twyers e, by whichthe compressed air entering by the conduit d is ejected. This air servesto cool the cone, to assist in the tine distribution of the moltenmaterial, and to supply oxygen for the combustion of the obnoxiousadmixtures. The

rotating cone is surrounded by a mantle f, which is preferably arrangedat a considerable distance from the center. The distance of five to siXfeet has been found practical to allow time for the combustion of theignited particles while passing up in the space between the rotatingcone and the mantle. This mantle f is open at its foot, as indicated at7i, and at its top end to allow the passing of air. The air-current maybe strengthened by making the mantle higher than necessary to catch theiiying particles. The mantle is preferably cooled at the zone, where theparticles thrown outward by the cone b impinge. A cooling-jacket g isprovided for this purpose. The cooling prevents the adhering of theparticles to the mantle and improves the product. The dropping materialis collected in a cone k and discharged by the channel l.

A gallery m is provided for the man in charge of the apparatus.

Now what I claim, and desire to secure by Letters Patent7 is thefollowing:

1. The combination of a hollow perforated rotatable body provided withperforations and increasing in diameter downwardly,a hollow axlecommunicating with said body and adapted to connect it with a supply ofcompressed air, and means for conveying material on top of said body.

2. The combination of a rotatable hollow body provided withperforations, a hollow axle communicating with said body and adapted toconnect it with a supply of compressed air, and a conduit for droppingmolten material on said body.

3. The combination of a rotatable bodyhaving a plurality of steps atdifferent leve1s,the lower steps being of greater diameter than theupper steps, and a conduit for conveying molten material to said body.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

CHRISTIAN FELLNER.

Witnesses:

JEAN GRUND, CARL GRUND.

DISCLAIMER- @LWL-Obmann Eallner, Frankfort-on-the-Main, Germany.MANUFACTURE or CEMENT. Patent dated November 26, 1901. Disclaimer tiledSeptember 25, l 1912, by the assignee, The Atlas Portland CementCompany. Enters this disclaimer to that part of the claim in saidspecification which is in the following words, to wit: I

i The combination of a hollow perforated rotatable body provided withperfort and increasing in diameter downwardly, a hollow axlecommunicating with said body and adapted to connect it with a supply ofcompressed air, and means for conveying material on top of said body. p

2. The combination of a rotatable hollow 'body provided withperforations, a

hollow axle communicating with said body and adapted to connect it witha supply of compressed air, and a conduit for dropping molten materialon said body.'

3. The combination of arotatable body having a'plurality of steps atdierent levels, the lower steps being of greater diameter than the uppersteps, and a conduit for conveying molten material to said body.

[Ooz'al Gazee, October 1, 1912.]

